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Order-disorder phase transitions significantly improving the upconversion luminescence intensity of BiTa7O19:Er3+/Yb3+.

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Title: Order-disorder phase transitions significantly improving the upconversion luminescence intensity of BiTa7O19:Er3+/Yb3+.
Authors: Yan, Xianglan1 (AUTHOR), Cao, Yongze1 (AUTHOR) cyz@dlmu.edu.cn, Liu, Tianshuo2 (AUTHOR), Wang, Xuekai1 (AUTHOR), Li, Lei1 (AUTHOR), Zhang, Jinsu1 (AUTHOR), Chen, Baojiu1 (AUTHOR) bjchen@dlmu.edu.cn
Source: Ceramics International. Mar2024, Vol. 50 Issue 6, p9433-9440. 8p.
Subjects: Order-disorder transitions, Luminescence, Phase transitions, Optical measurements, Raman spectroscopy, Photon upconversion
Abstract: BiTa 7 O 19 (BTO) has two lattice structure, P–6C2 (188) ordered phase and P 6 3 / mcm (193) disordered phase. Ordered and disordered BTO:Er3+/Yb3+ upconversion phosphors (UCPs) were obtained by solid sintering with different temperatures. The lattice structure of all the samples was investigated by XRD, SEM and Raman spectroscopy, and upconversion luminescence (UCL) spectra were tested by spectrometers. The green integral UCL intensity of the disordered BTO:Er3+/Yb3+ UCP is 60.76 times than that of the ordered sample. By comparing Er3+/Yb3+ co-doped and Er3+ single-doped UCPs with different structures, it is found that the disordered structure enhances the energy transfer from Yb3+ to Er3+, which may be caused by the disordered structure reducing the distance between Yb3+ and Er3+. The absolute temperature sensitivity of the sample with the highest UCL intensity is 0.01005 K-1 at 352 K. All results suggest that the disordered structure of BTO host can greatly improve green UCL intensity and the disordered BTO:Er3+/Yb3+ UCPs are suitable for the application of optical temperature measurement. [ABSTRACT FROM AUTHOR]
Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Order-disorder phase transitions significantly improving the upconversion luminescence intensity of BiTa7O19:Er3+/Yb3+.
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  Data: <searchLink fieldCode="AR" term="%22Yan%2C+Xianglan%22">Yan, Xianglan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cao%2C+Yongze%22">Cao, Yongze</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> cyz@dlmu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Tianshuo%22">Liu, Tianshuo</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Xuekai%22">Wang, Xuekai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Lei%22">Li, Lei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Jinsu%22">Zhang, Jinsu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Baojiu%22">Chen, Baojiu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> bjchen@dlmu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. Mar2024, Vol. 50 Issue 6, p9433-9440. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Order-disorder+transitions%22">Order-disorder transitions</searchLink><br /><searchLink fieldCode="DE" term="%22Luminescence%22">Luminescence</searchLink><br /><searchLink fieldCode="DE" term="%22Phase+transitions%22">Phase transitions</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+measurements%22">Optical measurements</searchLink><br /><searchLink fieldCode="DE" term="%22Raman+spectroscopy%22">Raman spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Photon+upconversion%22">Photon upconversion</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: BiTa 7 O 19 (BTO) has two lattice structure, P–6C2 (188) ordered phase and P 6 3 / mcm (193) disordered phase. Ordered and disordered BTO:Er3+/Yb3+ upconversion phosphors (UCPs) were obtained by solid sintering with different temperatures. The lattice structure of all the samples was investigated by XRD, SEM and Raman spectroscopy, and upconversion luminescence (UCL) spectra were tested by spectrometers. The green integral UCL intensity of the disordered BTO:Er3+/Yb3+ UCP is 60.76 times than that of the ordered sample. By comparing Er3+/Yb3+ co-doped and Er3+ single-doped UCPs with different structures, it is found that the disordered structure enhances the energy transfer from Yb3+ to Er3+, which may be caused by the disordered structure reducing the distance between Yb3+ and Er3+. The absolute temperature sensitivity of the sample with the highest UCL intensity is 0.01005 K-1 at 352 K. All results suggest that the disordered structure of BTO host can greatly improve green UCL intensity and the disordered BTO:Er3+/Yb3+ UCPs are suitable for the application of optical temperature measurement. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.ceramint.2023.12.260
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        Text: English
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      – SubjectFull: Luminescence
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      – SubjectFull: Phase transitions
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      – SubjectFull: Optical measurements
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      – SubjectFull: Raman spectroscopy
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      – SubjectFull: Photon upconversion
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      – TitleFull: Order-disorder phase transitions significantly improving the upconversion luminescence intensity of BiTa7O19:Er3+/Yb3+.
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            NameFull: Yan, Xianglan
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              Text: Mar2024
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